wi vi ppt

Dr.N.P.Hirani Institute of polytechnic , Pusad.

WI-VI TECHNOLOGY(Wireless-vision)

Presented by1Snehal Jaiswal

2Dipali Khond

Snehal- History What Wi-Vi is? Operating principle-how it works?Dipali- Development &futuristic uses Conclusion

Contents

Its research has been done prominently at MIT’s Computer Science and Intelligence Laboratory.

By Dina Kitabi ,a professor in MIT’s Department of Electrical engineering and computer science ,and her graduate student Fadel Adib.

History

WI-VI is a wireless device that captures moving objects behind a wall using low power WI-FI signal.

This tech uses reflected WI-FI signal to track movements of people behind wall.

What Wi-Vi is?

Based on the principle of RADAR and SONAR imaging(doppler effect).

It’s similar to the way radar and sonar work but without the expensive ,bulky gear and restricted frequencies that radar requires.

Depends on its own transmitting signal.

principle

Wi-Vi relies on a simple hardware of 2.4 GHZ WI-FI radios.

WI-FI signals easily penetrate through walls. Small enough to be portably used. Integrated in hand held devices.

WI-VI uses two transmitting antennas and a receiver.

Transmitting signals are low power WI-FI signals.

The two antennas transmit almost identical signals, except the second antenna’s signal is a inverse of first ,resulting in its interference.

How it works?

Diagramatic representation

As the person moves through the rooms, his or her distance from the receiver changes, meaning the time it takes for the reflected signal to make its way back to the receiver changes.

Low cost Low power Small size

Advantages

Low resolution. Short range of communication. Low quality of images.

Disadvantages

Possible use in smart phones as a hand held device.

Monitoring situations in hospitals,malls,hotels, etc.

Disaster recovery Gaming Military purpose

Applications

Smart hand held device which give an insight vision through walls.

Could prove to be very powerful device for defence purpose.

Further improvement will allow WI-VI to become more expressive hence hoping new directions of virtual reality.

Conclusion

www.seminarsonly.com www.mit.com www.gizmag.com www.electronicstoday.com www.techhive.com

References